MULTIRADII FORMING ROLLER Russian patent published in 2015 - IPC B24B39/04 

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming, particularly, to surface hardening by forming rollers. Roller working surface has 2 to 10 forming elements with profile radius of 0.5-5 mm shifted relative to each other by 0.01-0.1 mm to/from radial direction. Spacing between crests of said forming elements along roller axis makes $$l=\mathrm{1,2}\dots 2\cdot \left(\frac{R_{pr1}+R_{pr2}}{2}\right)$$ where R_pr1 and R_pr2 are profile radii of the first second rollers.

EFFECT: enhanced performances.

3 dwg